Role of a scalar field in the radiation dominated epoch of the development of the universe |
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| Authors: | R M Avakyan G H Haroutunyan |
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| Institution: | (1) G. S. Saakyan Chair of Theoretical Physics, Erevan State University, Armenia |
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| Abstract: | The recently discovered accelerated expansion of the universe is of current interest in theoretical research on the evolution
of the universe. The cause of this behavior is presumably the presence of dark energy, which has been estimated to form up
to 70% of the universe and generates a “repulsive force.” In this paper a cosmological model is constructed which takes the
dark energy into account in a Jordan-Brans-Dicke tensor-scalar model with a dominant, nonminimally coupled scalar field in
the presence of a cosmological scalar. The radiation dominant epoch is discussed.
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Translated from Astrofizika, Vol. 51, No. 1, pp. 151–159 (February 2008). |
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| Keywords: | cosmology cosmological scalar dark energy accelerating expansion |
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